I agree with you there 100%, Vivienne.
Current culture - and especially Facebook culture - dictates that everything online is up for grabs, it's free to do what one likes with it and why on earth should one spare a thought for the mug who has expended time and effort and possibly money in making it publicly available. Nothing must get in the way of that warm glow when the image results in dozens of Likes or "Wows!" or "OMGs!" Especially when no further information is given and then everyone, unnecessarily, starts to speculate as to the what and where and who and why.
Standards of common courtesy seem virtually non-existent, both towards the originator of the information who has had his/her work pirated without acknowledgement or appreciation; and to the new recipient who might just welcome the courtesy of an easy route towards additional - and first-hand - information.
We're all guilty to one extent or another, even in a non-Facebook forum like this. And it's not always practicable to do what common courtesy demands. But all of us need to go to a bit more trouble over this. And we should never forget just how fortunate we are, now, to have an almost unlimited library available to us at the click of a button. I'm still struck by the wonder of it all. It wasn't always the case, and it didn't all appear by accident.
Chris